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Microstrip Antenna Gain Enhancement Using Near Zero Refractive Index Metamaterials
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نویسنده
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Mohanna Shahram ,Tamandani Abdolshakoor ,Soltani Sara
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منبع
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Journal Of Electrical And Computer Engineering Innovations - 2017 - دوره : 5 - شماره : 1 - صفحه:59 -63
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چکیده
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Some useful features of microstrip patch antennas are low profile, low weight and easy fabrication. however this type of antenna suffers from having a low gain, caused by propagation surface waves. in this paper, a new near zero refractive index metamaterial (mtm) unit cell is designed and fabricated as a superstrate over a rectangular microstrip patch antennas (rmpa). in order to obtain a maximum gain, the distance between the superstrate and the microstrip of the antenna has been optimized. additionally, the feed position has been optimized to minimize the return loss. the operation frequency set at 10.3ghz and there are two resonance frequencies, one at 10.1gh and the other one at 11.68ghz. the simulations and measured results indicated that the superstrate mtm structure, designed to place horizontally over the antenna, increases the gain to almost 2.4db and 2.62db at 10.1ghz and 11.68ghz respectively. moreover, the radiation efficiency and directivity of the antenna are improved significantly.
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کلیدواژه
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Rectangular Microstrip Patch Antenna ,Near Zero Refractive Index ,Metamaterial
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آدرس
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University Of Sistan And Baluchestan, Faculty Of Electrical And Computer Engineering, ایران, Velayat University, Department Of Engineering, ایران, University Of Sistan And Baluchestan, Faculty Of Electrical And Computer Engineering, ایران
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Authors
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